SU755298A1 - Disc crusher - Google Patents

Description

The invention relates to a device for grinding bulk materials and can be applied in agricultural and other industrial industries.

Known disk crusher, including rotating and stationary disks, on which cutting edges are mounted, and the cutting edges of the fixed disk are interconnected by partitions constituting a closed loop, which together with the surface of the rotating disk forms channels from the inner side of the contour to direct the product to be crushed- '- * that to the place of grinding, and from the outside - channels for removal of the crushed product [1].

The disadvantage of this design is the need for a powerful drive, large wear of the ribs and the formation of a dust-like fraction.

The present invention is devoid of the indicated disadvantages and has the aim of reducing the drive power, the wear of the ribs and the formation of a dust-like fraction.

This goal is achieved by the fact that in a disk crusher, including

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rotating and immobile disks on which cutting edges are mounted, the cutting edges of a stationary disk are interconnected by partitions constituting a closed loop, which together with the surface of the rotating disk forms channels on the inside of the contour to direct the crushed product to the grinding site, and the sides are channels for the removal of the crushed product, the inner surfaces of the discs are made conical, while forming the inner conical surfaces parallel.

FIG. 1 shows a disk crusher in a vertical axial section; in fig. 2 - fixed disk crusher, bottom view; in fig. 3 - rotating disk crusher, top view; in fig. 4 shows section A-A in FIG. one.

The disk crusher includes a housing 1 in which the fixed 2. and rotating 3 disks are coaxially mounted. The fixed disk 2 is made with a central loading window 4. The rotating disk 3 through the shaft 5 is connected to the drive 6. In the center of the rotating

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the disk 3 is mounted on the impeller 7. The inner (facing each other) surfaces of the fixed disk 2 and the rotating disk 3 are made conical, while the inner surface of the fixed disk 2 is made _ Bent, and the rotating disk 3 is made with a * beater. On the inner conical po: "the surfaces of the fixed disk 2 are placed cutting edges 8, interconnected by partitions 9, consisting of a zigzag closed contour with specified edges 8. Channels 10 are formed on the inner side of the contour to direct the crushed product to the grinding site, and from the outer side, the channels 11 for removing the crushed product.On the inner conical surface of the disk 3 there are fins 12. On the periphery of the disks 2 and 3 in the housing 1 there are windows 13 for discharging the crushed product 20. The flexible disk 2 is connected with the housing 1 by pins 14 with the possibility of smooth axial movement. The housing 1 is supported on the frame 15.

The described crusher works in the following way-25.

Bulk material through the central loading window 4 of the fixed disk 2 enters the impeller 7, the blades of which during rotation throw it into the channels 10. The cutting fins 12 of the rotating disk 3 interact with the cutting fins 8 of the disk 2 and trap the material particles and cut them. The cut particles under the action of centrifugal forces ^ 5 are immediately dropped from the ribs 12 of the disk 3 and thrown through the channels 11 to the periphery of the disks 2 and 3 and removed through the windows 13. The particle size of the crushed product depends on the height of the cutting edges 12 and the size of the gap between the cutting ribs 8 and 12. The size of the gap between the ribs 8 and 12 is smoothly adjusted by the vertical movement of the fixed disk 2, which is due to the rotation of the studs 14.

Performing crusher with a conical shaped disc design allows almost without increasing the diameters of disks _ considerably increase the length of PE ^30, astringent, and the counter-knife, which is equivalent to a proportional increase in productivity of the crusher without increasing power consumption of grinding process. Immediate removal of particles from the grinding zone, immediately after their separation, helps to reduce the formation of a dust-like fraction, thereby improving the quality of the crushed product, reducing wear on the disk surface along the cutting knives, and also increasing productivity due to the fact that cutting quickly from particles knives again involved in the grinding material.

With equal performance, the metal intensity of the crusher with conical disks is less than that of a crusher with flat disks, since the design of the conical disks is more rigid, therefore the walls of the disks can be thinner.

The design of the discs, in which the forming internal conical surfaces are parallel, provides the same size of detachable particles along the entire length of the cutting edges of the discs, which determines the high quality of the crushed product.

Thus, the use of the specified disk crusher allows you to achieve the goal, namely to reduce the drive power, wear of the ribs and the formation of dust fractions.

Claims (1)

Claim Disk crusher, including rotating and stationary disks, on which cutting edges are mounted, and the cutting edges of the fixed disk are interconnected by partitions constituting a closed loop, which together with the surface of the rotating disk forms channels from the inner side of the contour to direct the crushed product to the grinding site ^ from the outside - channels for removal of the crushed product ^ differing in the fact that, with the goal of reducing drive power, wear of the ribs and the formation of dust-like fractions' , the inner surfaces of the discs are made conical, while forming the inner conical surfaces parallel.